Safety-valve.



F.' S. MQINTYRE.

v SAFETY mum. APPLICATION FILED MAR. 23,1909.

93455635 -P3$ented Sept. 21. 1909 2 SHEETS-SHEET 1.

nventoz I FFANKGMW a? W W MM 3% I Patented Sept. 21, 1909.

2 SHEETS-SHEET 2.

Swoemkos FR 1% @MLMZWE.

@Hkvwwag depending wall formed integral with said a casing, a valve seat in the lower end of said wall, a valve stem formed in two sections, a

cylindrical housing depending from the up- 5 per section of said valve stem, and a spiral spring in said housing secured to said upper and lower sections of the valve stem.

3. A safety valve comprising a casing, a depending wall formed integral with said casing, a valve seat in the lower end of Said Wall, a valve stem formed in two sections, a cylindrical housing depending from the upper section of said valve stem, vertical slots formed in the lower end of said housing at 15 diametrically opposite points, a valve formed threaded section upon the end of the upper.

section of said stem mounted in said casing and a spiral spring 1n said houslng secured to said upper and lower sections of the valve stem.

In witness whereof I aflix my signature, in presence of two witnesses.

FRANK S. MOINTYRE.

Witnesses: ROBERT F. IRvINn, HOWARD F. BREHAM. 

